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- 1. Multiple Choice
What is biomass energy?
any organic matter that can be used by burning wood and other plant life.
Radiant energy emitted by the sun.
a combustible black or dark brown rock consisting mainly of carbonized plant matter, found mainly in underground deposits and widely used as fuel.
made by tapping into steam or hot water reservoirs underground; the heat is used to drive an electrical generator.
- 2. Multiple Choice
Fuelwood, charcoal, and manure provide up to ___% of energy in developing nations.
90
50
33
10
- 3. Multiple Choice
Is biomass energy a renewable energy source?
Yes, always, because you can grow trees again.
No, it's just like fossil fuels.
It depends, only if the source is not overharvested.
No, because manure is not renewable.
- 4. Multiple Choice
What is co-generation?
Substituting biomass for coal in a coal-fired power plant.
Vaporizing biomass at extremely high temperatures.
Using the extra heat from a power plant to heat a nearby business or homes.
Fermenting grain to form alcohol.
- 5. Multiple Choice
What is co-firing?
Substituting biomass for some coal in a coal-fired power plant.
Vaporizing biomass at extremely high temperatures to form a gas fuel.
Using leftover heat from a power plant to heat nearby homes or businesses.
Fermenting biomass to form alcohol fuel.
- 6. Multiple Choice
What is a primary drawback to using biomass as an energy source?
It produces more sulfur dioxide emissions than coal.
Access to biomass is variable depending on location.
No waste materials can be used.
Removing the crops or trees for burning deprives the soil of nutrients used to grow them, resulting in lowered soil fertility.
- 7. Multiple Choice
What is E-85?
A common type of fuel at most gas stations.
Fancy biomass fuel that costs $85 per gallon.
A mixture of 85% gasoline and 15% ethanol.
A mixture of 85% ethanol and 15% gasoline.
- 8. Multiple Choice
What is the primary drawback to using ethanol for fuel?
It requires no pesticides.
It competes for food crops, driving up prices.
It requires little fossil fuel inputs.
It has a higher EROI than hydropower.
- 9. Multiple Choice
What is B-20?
A mix of ethanol and biodiesel.
A mix of conventional gasoline and biodiesel.
Fuel that must always be processed in a biodiesel plant.
The best biofuel in the Top 20 Biofuel list.
- 10. Multiple Choice
Which of these is an advantage to using algae for fuel?
It uses only fresh water.
It can only be grown in the ocean or a lakee.
It can be grown in wastewater and can use CO2 from smokestacks.
It causes eutrophication.
- 11. Multiple Choice
Which source of energy has the highest EROI?
hydropower
nuclear
coal
ethanol
- 12. Multiple Choice
This is a drawing of:
the Three Gorges Dam in China
a run-of-river hydropower dam
a large hydropower dam
a dam that likely blocks fish passage
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